Stuffing-box.



G. CASH.

STUFFING BOX.

APPLICATION FILED usc. I4. I9Ie.

Patented June 12, 1917.

GENT-RY CASH, F WHITING, INDIANA, ASSIGNOR T0 STANDARD OIL COMPANY, 0F WHITING, INDIANA, .A CORPORATION 0F INDIANA.

STUFFING-B 0X.

Specication of Letters Patent.

Patented J une 12,- 1917.

To all whom t may concern: Be it known thatl I, GENTRY CASH, a citizen of the United States, residing at Whiting, in the county of Lake and State of Indiana, have invented a new and useful Improvement in Stufling-Boxes, of which the following is a specification.

My invention relates to improvements in stuffing-boxes and will be fully understood from the following specification taken in connection with the accompanying drawing, in which Figure 1 is a Vhorizontal section through one end of a liquid container to which my stuffing-box has been applied, the latter beingshown partly in elevation; and Fig. 2 is an enlarged the stuling-box.

My invention is particularly -designed for use in connection with the packing of rotating, oscillating or reciprocating shafts, which enter liquid containers, such, for instance, as digest'ers or stills for hydrocarbon oils and other materials in the treatment of which relatively high temperatures and pressures are employed.

It has been found by practical experience that the ordinary forms of stuingboxes do not give satisfactory service when exposed to the effects of exceedingly hot gases or liquids confined under pressure.

For these particular services I have therefore designed a novel form of stuffing-box in which the packing-joint or gland is so arranged as to give good service with a minimum amount of attentlon.

Referring to the drawing, the numeral 10 designates the convex head or end of a cylindrical container and the numeral 11 designates a shaft passing through this head. The stuling-box for the shaft is of compound form, being in fact, made up of two stuffing-boxes arranged in tandem. The inner stuffing-box comprises a sleeve 12 having a collar 13 formed integrally thereon intermediate its length and welded or otherwise secured hermetically to the container-head 10. The sleeve 12 may be lined with a bearg-bushing 14 for supporting the shaft 11,

` the latter being shown as secured in position by a collar 15 detachably fastened'thereto and normally abutting against the inner end of the sleeve and bearing-bushing. The outer end of the sleeve 12 beyond the collar 13 forms the stuffing-box proper, being provided with a anged head 16 to which is section taken through lsuch liquid through the bolted a gland-member 17, the latter serving to retain in place the usual annular packing-ring 18.

The inner stuffing-box made up of the sleeve l2, gland 17 and packing-ring 18 is housed within a cylindrical casing 19 riveted to the head 10, as shown at 20, the joint being gas-tight. The outer end of the cylindrical casing 19 has detachably secured thereto a cover-casting 21 which carries the second stuiing-b/ox generally designated by 22 and which may be of the construction shown in the drawing, or of any other approved construction.

'Ihe intermediate chamber or jacket-space formed by the casing 19 is preferably provided with means by .which a cooling fluid may be introduced and withdrawn, such means comprising inlet and outlet pipes 23 and 24 tapped into the wall of the casing. This system of cooling is particularly advantageous where the container to which the stufling-box is applied is to be constantly fed with a fresh supply of liquid. Under such conditions the outlet-pipe 24 may be led from the jacket or casing 19 directly into the container, as shown at 25 in Fig. l of the drawing.

By the construction above described the inner stuffing-box may be kept cool' by the constant flow of a cooling liquid through the housing-chamber or jacket surrounding the same, and by this means the destructive effect of the high temperature existing within the container is avoided. Furthermore, the pressure within the jacket surrounding the outer end of the inner stuffing-box may be kept at approximately the 4same ligure as that existing within the container, and the pressures on the two sides of the stuffingboxbeing substantially the same, leakage through the box is reduced to a minimum. It is true that under these conditions the outer 'stuffing-box 22 will be subjected to the'li'ig'h pressure of the jacket-space but such high pressurey will not be accompanied by high temperature and the destructive effect on the packing of the outer box is therefore far less. In addition it will be noted that a relatively valuelessliquid may be employed for cooling, and the leakage of outer stuffing-box would represent no greatI loss.

The greatest advantages may be obtained from my invention, however, where it is possible to feed liquid into the container through the intermediate jacket of the stuifing-box. Under such circumstances no attention need be paid to slight deterioration and leakage of the inner stuffing-box. The pressure in the jacket being greater than the pressure within the container any flow of liquid through the inner stuffing-box will be inward and not outward and the stuing-box itself will act as an inlet, supplementing the pipe 25.

By the use of my invention I find it possible to adequately pack4 and keep packed shafts entering oil stills and digesters Where the temperature and pressure conditions are such that no satisfactory results may be had with any other form of stuifing-box known to me.

While I have shown and described in considerable detail one specific embodiment of my invention, and have set forth some of the advantages of my invention in certain specie uses, it is to be understood that this showing and description is illustrative only and for the purpose of making my inven- ,K tion more clear, and that I do not regard the invention as limited to these details, nor to any of them, except in so far as such limitations are included within the terms of said stuffing-box, and

the accompanying claims in which it is my intention to claim all novelty inherent in my invention as broadly as is permissible vin View of the prior art.

What I claim as new and desire tq secure by Letters Patent is 1. In combination, a container, box extending to the outside of said containe'r, and means for supplying a liquid medium to the container said liquid serving as a cooling medium for the stuffing-box.

2. In combination, a container, a stuiiingbox extending to the outside of said container, a housing inclosing the outer end of means for supplying a liquid medium to the container said li uid serving as a cooling medium for the/stu ngbox.

3. In combination a container, a shaft entering the same, a stuiing-box forming a joint between the said container and shaft, a housing inclosing the outer end of the said stuiing-box, a second stuffing-box forming a joint between said housing and said shaft, and means forf introducing fluid into the said container through the chamber formed by the said housing.

GENTRY CASH.

a stuiiing- 

